branching: start branch for test compat with Mercurial 4.8

test-compat: reverse test change from 9bce7e6c18b3 This change are 4.9 only

test-compat: reverse test change from db87432df8de This change are 4.9 only

test-compat: reverse test change from ac39cfb5bddd This change are 4.9 only

branching: merge stable into default prior to new version

branching: merge wit stable

obsdiscovery: use consistent filtering during discovery If we computed revision using an unfiltered repository, we should run the discovery unfiltered too.

evolve: make sure we don't stop after evolution of obsparent (issue5881) Before this patch, we were not handling the case when revset given by user also contain wdir parent which is obsolete. We were explicitly checking if wdir parent is obsolete, then update to its successor and return; without checking if we still have some revisions to be evolved. This patch make sure that after it update to the successor of obsolete parent it doesn't stop and continue to evolve other remaining revisions. Changes in tests/test-evolve-issue5881.t reflect the fixed behaviour.

evolve: extract "update" code into its own function This patch moves the code to a function which handles the case when wdir parent is obsolete and evolve will just update to its successor. And extraction of this to a function will also help us to fix the issue5881.

evolve: add test case for issue 5881

evolve: add test which shows fixed behaviour of `hg evolve` (issue5686)

evolve: cover the orphanmerge part missed by lastsolved Let's cover the orphanmerge part also as it was missed at the time when we introduced "lastsolved". Chagnes in test-evolve.t reflect the fixed behaviour.

evolve: add test which shows orphan-merge resolution can result to crash It happens when there are still some revisions to evolve after evoluiton of a orphan-merge. And the reason behind crash is that `lastsolved` is not being updated and contain a wrong value which is now hidden. Next patch will fix this problem.

next: populate stacktemplate to the missed _nextevolve function

evolve: adapt for deprecated ui.progress() This makes a wrapper that has an interface like ui.progress() even though that's the old interface that will eventually go away. That's because it's a lot easier to convert from the ui.progress() to the ui.makeprogress() interface than the other way around. Once we no longer support hg<4.7, we can migrate our callers to ui.makeprogress() and drop the wrapper.

fold: sort concatenated commit messages in topological order It seems better to have the proposed commit message look the same whether the user ran `hg fold --exact -r . -r .^` or `hg fold --exact -r .^ -r .`.

topic: make revsets like 'foo#topic[0]' work Essentially, 'topic' relation subscript function is the same as 'generations', but is limited to revisions marked with one particular topic.

changelog: add an entry about the revset stack indexing

test: adapt output to minor behavior change CORE-TEST-OUTPUT-UPDATE: bad05a6afdc8

tests: remove unused variable and needless subshell in testlib/pythonpath.sh

branching: merge with stable

tests: conditionalize some output for Windows A couple of these were already present, but out of place.

test-pyflakes: use '/' when printing the files to check If paths are printed with '\', `xargs` sees the parts allsmooshedtogether, and pyflakes errors out.

tests: fix PYTHONPATH manipulation on Windows Without the semicolon separator and quotes, the variables ends up like this: c:\Users\Matt\projects\hg-evolve:c:\Users\Matt\projects\hg-evolve: c:\Users\Matt\projects\hg;c:\Users\Matt\projects\hg-evolve\tests; c:\Users\Matt\projects\hg\tests That in turn makes the local evolve code unreachable, and the system installed code is tested instead. I'm testing against `uname` instead of a trivial python script printing os.name because maybe one day tests will run on WSL.

exthelper: update documentation with some examples for using registrar aliases

exthelper: simplify the ability to register filesets Same mechanism as revsets earlier in this series.

exthelper: simplify the ability to register templates Same mechanism as revsets earlier in this series.

exthelper: simplify the ability to register revsets I think this is what Yuya and Boris agreed on.[1] This happens *after* the extsetup phase now (and after the _aftercallback notifications). But this is trivial, mergeable between exthelper instances, and doesn't need to have the extension name supplied when registering. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2018-December/125888.html

exthelper: support the option argument when registering a command Largefiles uses this 5th argument with push and pull, so this will be tested in the next commit. I assume the reason for unrolling and reforming the tuple in each finalxxxsetup() is to validate that something proper was passed in when registering. But it's better to explode when decorating than during the delayed actual registration.

exthelper: simplify configitem registration